If you've never failed, you've never tried anything new.

The mind can proceed only so far upon what it knows and can prove. There comes a point where the mind takes a higher plane of knowledge, but can never prove how it got there. All great discoveries have involved such a leap

There is only one road to human greatness: through the school of hard knocks.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Once you stop learning, you start dying

My scientific work is motivated by an irresistible longing to understand the secrets of nature and by no other feeling. My love for justice and striving to contribute towards the improvement of human conditions are quite independent from my scientific interests.

Good acts are like good poems. One may easily get their drift, but they are not rationally understood.