When I tell the truth, 

it is not for the sake of convincing 

those who do not know it, 

but for the sake of defending 

those that do.

Progress imposes not only new possibilities for the future but new restrictions.

Freedom is absolutely necessary for the progress in science and the liberal arts.

The mind loves the unknown. 

It loves images whose meaning is unknown, 

since the meaning of the mind itself is unknown.

The ear is the avenue to the heart.

The most significant moment in the course of intellectual development, 

which gives birth to the purely human forms of practical and abstract intelligence, 

occurs when speech and practical activity, 

two previously completely independent lines of development, 

converge.

Memories have huge staying power, 

but like dreams, 

they thrive in the dark, 

surviving for decades 

in the deep waters of our minds 

like shipwrecks on the sea bed.

To travel hopefully is a better thing than to arrive.

Life is like music: 

it must be composed by ear, feeling and instinct, 

not by rule.

Life is a journey that must be travelled 

no matter how bad the roads and accommodations.

We do not take humour seriously enough.

Post-modernism has cut off the present from all futures. 

The daily media add to this by cutting off the past. 

Which means that critical opinion is often orphaned in the present.

If one could conclude as to the nature of the Creator 

from a study of his creation

it would appear that God has a special fondness 

for stars and beetles.

When ignorance gets started 

it knows no bounds.

We are enriched by our reciprocate differences.