The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?
Wisdom... comes not from age, but from education and learning.
Unfortunately, the clock is ticking, the hours are going by. The past increases, the future recedes. Possibilities decreasing, regrets mounting.
Attitude, not Aptitude, determines Altitude.
The greatest minds are capable of the greatest vices as well as of the greatest virtues.
A man who as a physical being is always turned toward the outside, thinking that his happiness lies outside him, finally turns inward and discovers that the source is within him.
The secret of life, though, is to fall seven times and to get up eight times.
The only limit to our realization of tomorrow will be our doubts of today.
In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.
The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.
Not everything that can be counted counts, and not everything that counts can be counted.
Only idiots refuse to change their minds.
The noblest pleasure is the joy of understanding.
Gravity is only the bark of wisdom's tree; but it preserves it
There are no limitations to the mind except those we acknowledge.
In order to change the world, you have to get your head together first
Generosity is giving more than you can, and pride is taking less than you need.
The use of travelling is to regulate imagination by reality, and instead of thinking how things may be, to see them as they are.
All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
Nature is pleased with simplicity. And nature is no dummy
In the midst of movement and chaos, keep stillness inside of you.