In seeking absolute truth we aim at the unattainable and must be content with broken portions. - William Osler

Be calm and strong and patient. Meet failure and disappointment with courage. Rise superior to the trials of life, and never give in to hopelessness or despair. In danger, in adversity, cling to your principles and ideals. Aequanimitas!

Sir William Osler.

Think not of the amount to be accomplished, the difficulties to be overcome, or the end to be attained, but set earnestly, at the little task at your elbow, letting that be sufficient for the day.

Soap and water and common sense are the best disinfectants.