It takes a long time to become young.

Men are never so likely to settle a question rightly 

as when they discuss it freely.

There is still a difference between something and nothing,

but it is purely geometrical

and there is nothing behind the geometry.

Friendship is a sheltering tree.

Intelligence is the faculty of making artificial objects, 

especially tools to make tools.

The apple cannot be stuck back on the Tree of Knowledge; 

once we begin to see, 

we are doomed 

and challenged 

to seek the strength 

to see more, 

not less.

Under conditions of tyranny 

it is far easier to act than to think.

Risk! 

Risk anything! 

Care no more for the opinions of others, 

for those voices. 

Do the hardest thing on earth for you. 

Act for yourself. 

Face the truth.

I intend to remain an independent and political intelligence in my own right.

Official truths are often powerful illusions.

One learns more from listening than speaking. 

And both the wind 

and the people who continue to live close to nature 

still have much to tell us 

which we cannot hear 

within university walls.

From fanaticism to barbarism is only one step.

The best way to find yourself 

is to lose yourself 

in the service of others.

Socialism is the ideal state, 

but it can never be achieved 

while man is so selfish.

Do not be misled by what you see around you, 

or be influenced by what you see. 

You live in a world which is a playground of illusion, 

full of false paths, false values and false ideals. 

But you are not part of that world.