* I always work on problems which have already been tried by many, so it is (very) difficult and mistakes are inevitable.

* You can not invent anything in your lab which is not already there in nature. So, be humble. Stop being arrogant.

* Hilbert, das ist nicht Mathematik, das ist Theologie!

* Throw as much mud as you want, won't be rolling in it with you!

* Do not overload your boat.

* Have stopped trying to grow up. It is difficult! Remaining a child is easier and fun!

* You throw a shoe and it comes back to you! Help someone and it comes back to you. That is how nature heals itself.

* Everything dies its natural death, whether a living being or a controversy.

* Friend Rahim to Tulsidas on asking why he casts his eyes down while giving alms:

Denhar koi aur hai, bheje jo din rain, log bharam hampar karein, tose neeche nain.