The unprepared mind cannot see the outstretched hand of opportunity
Scottish biologist, physician, microbiologist, and pharmacologist. His best-known discoveries are the enzyme lysozyme in 1923 and the world's first antibiotic substance benzylpenicillin (Penicillin G) from the mould Penicillium notatum in 1928.
The man of knowledge must be able not only to love his enemies but also to hate his friends
Expect the best, prepare for the worst.
Only put off until tomorrow what you are willing to die having left undone
We can judge the heart of a man by his treatment of animals
A man who dares to waste one hour of time has not discovered the value of life
It is better to live one day as a lion than 100 years as a sheep
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