My intellectual development was retarded, as a result of which I began to wonder about space and time only when I had already grown up.

Time is not at all what it seems. It does not flow in only one direction, and the future exists simultaneously with the past.

Epistemology without contact with science becomes an empty scheme. Science without epistemology is-insofar as it is thinkable at all-primitive and muddled.

Keep on sowing your seed, for you never know which will grow - perhaps it all will.

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.

The attempt to combine wisdom and power has only rarely been successful and then only for a short while.

As far as I'm concerned, I prefer silent vice to ostentatious virtue.