Below you will read some of his quotes that are timeless.

Life is short but medicine is long, opportunity is fleeting, experience is illusory, good judgment is difficult. The doctor must therefore not only offer the sick person what is appropriate, but must also have his own help, the help of those around him and the right circumstances for the occasion.
The austere and strict diet is always dangerous, and in long-term illnesses and severe ones, where it is not accepted. Besides, dieting that leads to the extreme limits of thinness is harmful, for the restoration of the damage, when it has reached the extreme point, is very difficult.
When the disease is at its most critical point, then a very strict diet must be applied.
In the summer and autumn, food is very difficult to tolerate," very easy in the winter and secondly in the spring.
It is impossible to know medicine who does not know exactly what man is.
From tranquility and laziness grows cowardice, from hardship and pain, courage.
In order to get by in life, people engineer a lot of things.
Fat people naturally die much faster than thin people.
Both sleep and wakefulness, if they exceed the measure, mean illness.
In food it is the best medicine and in food the most harmful poison. The worst and the best for something.