There is perhaps nothing so bad and so dangerous in life as fear.

The distinction between the past, present and future is only a stubbornly persistent illusion.

Bigotry tries to keep teeth safe in its hand with a grip that kills it.

Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

Out of 6 billion humans, the troublemakers are just a handful.

The butterfly counts not months but moments, and has time enough.

In domestic government, unity and cooperation are essential requisites. 

Gray hairs are signs of wisdom if you hold your tongue, speak and they are but hairs, as in the young.

Life is like riding a bicycle. To keep your balance, you must keep moving.

Education is the most powerful weapon which you can use to change the world.

The fear of death is the most unjustified of all fears, for there's no risk of accident for someone who's dead.

The policy of being too cautious is the greatest risk of all.