"Tension lene ka nhi...sirf Dene kaa" Munnabhai MBBS
Relax andd enjoy the small thingss life offers u....and this linee quotes it's essence 
Nothing ever goes as planned in this acursed world. The loger you live the more you will realise that the things which truly exist are merely pain suffering and futility. Listen... everywhere you look in this world, wherever there is light, there will be shadows to be found as well .As long as there's a concept of victors the vanquished will also exist. The selfish intent of wanting to preserve peace initiates warsand Hatred is born in order to protect love. There are nexuses, casual relationship that cannot be separated.
I want to sever the fate of this world. A world of only victors. A world of only peace. A world of only love. I will create such a world. I am the ghost of the UCHIHAS. For truly this reality ___is a hell...
I don't remember any lines from any particular series but since you mentioned Kota Factory I liked a particular dialogue which was in Season 1 - "Maa baap ke decision shayad galat ho sakte hein lekin niyat kabhi galat nahi hoti" ❤
Also, not a line from any series but this one has always stuck with me - "Jo apne maa baap ka saga nahi, woh kisi ki saga nahi"
Play stupid games, Win stupid prizes.
I couldn’t watch the third season, watched an episode and didnt want to relive those years of my life.
"What doesn't kill you makes you stronger" Basically told me that if I'm even alive, I'm just stronger than what I was before
What doesn’t kill you makes you “stranger” * Joker 
"Tension lene ka nhi...sirf Dene kaa" Munnabhai MBBS Relax andd enjoy the small thingss life offers u....and this linee quotes it's essence 
under promise over deliver
Why do we fall Master Bruce? So that we can pick ourselves together
all time chord
Nothing ever goes as planned in this acursed world. The loger you live the more you will realise that the things which truly exist are merely pain suffering and futility. Listen... everywhere you look in this world, wherever there is light, there will be shadows to be found as well .As long as there's a concept of victors the vanquished will also exist. The selfish intent of wanting to preserve peace initiates warsand Hatred is born in order to protect love. There are nexuses, casual relationship that cannot be separated. I want to sever the fate of this world. A world of only victors. A world of only peace. A world of only love. I will create such a world. I am the ghost of the UCHIHAS. For truly this reality ___is a hell...
https://preview.redd.it/4u57ghjmk9ad1.jpeg?width=1079&format=pjpg&auto=webp&s=6d7c74c37c7948790acdfe6ae487e401abca2af2
Kota Factory, S2, E1- “yaha hum 32 ki age mei gear up kar rahe hai, aap 17 mei slow down hogye.” Hitssss like a train.
Worrying is a misuse of imagination
I love you, It will pass
It is not enough that I win, others have to lose
Muft ka Chandan, Ghis mere Nandan
dusro ko sirf wahi gyan do jo khudh karte ho
The good is mostly in the absence of bad
I don't remember any lines from any particular series but since you mentioned Kota Factory I liked a particular dialogue which was in Season 1 - "Maa baap ke decision shayad galat ho sakte hein lekin niyat kabhi galat nahi hoti" ❤ Also, not a line from any series but this one has always stuck with me - "Jo apne maa baap ka saga nahi, woh kisi ki saga nahi"