Tsiolkovsky

So much to do; so little done. - Cecil

"What is defeat? Nothing but education, nothing but the first step to something better." - Wendell Phillips

"Who is not satisfied with himself will grown; who is not sure of his own correctness will learn many things." - Chinese Proverb

"It is not for man to rest in absolute contentment." - Southey

"The best way to keep good acts in memory is to refresh them with new." - Attributed to Cato by Bacon

"Forethought we may have, undoubtedly, but not foresight." - Napoleon

It is necessary to try to surpass one's self always; this occupation ought to last as long as life." - Queen Christina

"As is a tale, so is life; not how long it is, but how good it is, is what matters." - Seneca the Younger

"Our youth we can have but today; We may always find time to grow old." - Bishop Berkeley

"Great thoughts reduced to practice become great acts." - William Hazlitt

"Reflection makes men cowards." - William Hazlitt

“The happiness of your life depends upon the quality of your thoughts.” - Marcus Aurelius

It is not enough to have knowledge, one must also apply it. It is not enough to have wishes, one must also accomplish. - Johann von Goethe

"The strength of a man's virtue should not be measured by his special exertions, but by his habitual habits." -Blaise Pascal

"Tis easier to suppress the first desire than to satisfy all that follow." - Benjamin Franklin

"Resolve to perform what you ought; perform without fail what you resolve." - Benjamin Franklin.