Humiliation and mental oppression by ignorant and selfish teachers wreak havoc in the youthful mind that can never be undone and often exert a baleful influence in later life.

An empty stomach is not a good political adviser.

A photograph never grows old. You and I change, people change all through the months and years but a photograph always remains the same. How nice to look at a photograph of mother or father taken many years ago. You see them as you remember them. But as people live on, they change completely. That is why I think a photograph can be kind.

I didn't arrive at my understanding of the fundamental laws of the universe through my rational mind.

Our entire much-praised technological progress, and civilization generally, could be compared to an axe in the hand of a pathological criminal.

The creative scientist studies nature with the rapt gaze of the lover, and is guided as often by aesthetics as by rational considerations in guessing how nature works.

To understand the world one must not be worrying about one's self.