No man was ever yet 

a great poet, 

without being 

at the same time 

a profound philosopher.

I cannot afford to waste my time making money.

It is easier to go down a hill than up, 

but the view is from the top.

The health of the eye seems to demand a horizon. 

We are never tired, 

so long as we can see far enough.

Our ideas must be as broad as Nature 

if they are to interpret Nature.

All good things which exist are the fruits of originality.

To acquire immunity to eloquence
is of the utmost importance
to the citizens of a democracy.

It is godlike 

ever to think 

on something beautiful 

and on something new.

The world began without man, 

and it will complete itself without him.

The end of all good music is to affect the soul.

You must understand the whole of life, 

not just one little part of it. 

That is why you must read, 

that is why you must look at the skies, 

that is why you must sing and dance, 

and write poems and suffer and understand, 

for all that is life.

It seems to me that the natural world 

is the greatest source of excitement; 

the greatest source of visual beauty; 

the greatest source of intellectual interest. 

It is the greatest source of so much in life 

that makes life worth living.

The conscious mind may be compared to a fountain playing in the sun 

and falling back into the great subterranean pool of subconscious from which it rises.

The struggle for existence 

holds as much in the intellectual 

as in the physical world. 

A theory is a species of thinking, 

and its right to exist is coextensive 

with its power of resisting extinction by its rivals.

Poetry heals the wounds inflicted by reason.

For ideas to prevail, 

many of their defenders have to die in obscurity. 

Their anonymous influence makes itself felt.