Tacitus: The second heir is always viewed with suspicion and resentment.
Romain Rolland: Doubt can destroy yesterday’s faith and open the way for tomorrow’s faith.
UK: Doubt is the key to knowledge.
UK: What no one suspects needs no confirmation.
Germany: Young people believe many false things, and old people doubt many true things.
Mill: It is doubtful whether all the machines that have been invented have made any reduction in the daily toil of man.
novalis: In order to correctly understand the truth, we must first doubt it and argue with it.
Europe: Hypocrites always doubt the honesty of others.
United States: The most dangerous enemies are those we do not suspect.
UK: A man who knows nothing doubts anything.
Maurice Madan Dugar: Some people are so smart that you wonder what else could interest them.
Unamuno: Real science first teaches people to doubt and to be confused.
Anonymous: The evidence tells us where to focus our suspicion.
Bacon: Poverty of knowledge can make people have many doubts.
Doubt is an element of criticism, and the tendency of criticism must be skeptical.
------Disraeli
Doubt It can destroy yesterday's faith and open the way for tomorrow's faith.
------Romain Rolland
A frank person will never give up frank questions.
------W. Malone
The process of scientific development is a leap starting from curiosity and doubt.
------Ai Yin Stan
Faith and doubt complement each other. Without doubt, there is no true faith.
------Heise