Albert Einstein - my favourite short quotes -
We cannot solve our problems with the same thinking we used when we created them.
Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either.
Insanity: doing the same thing over and over again and expecting different results.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Great spirits have always encountered violent opposition from mediocre minds.
All religions, arts and sciences are branches of the same tree.
Common sense is the collection of prejudices acquired by age eighteen.
Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted.
Anger dwells only in the bosom of fools.
The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.