If you’re afraid – don’t do it, – if you’re doing it – don’t be afraid.
I don’t believe in taking right decisions. Take decisions and make them right.
Natural science does not simply describe and explain nature: it is part of the interplay between us and nature.
That rifle on the wall of the labourer’s cottage or working class flat is the symbol of democracy. It is our job to see that it stays there.
To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.
Logic is like the sword–those who appeal to it shall perish by it.
Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.
Worse than any severe mental illness, is the illness of bigotry.
Time and space are modes by which we think and not conditions in which we live.