it is only good for those who are strong enough in themselves to listen to the voice of error without being deceived, strong enough to see the example of vice without being led away by it.
 Jean-Jacques Rousseau, Emile, or On Education (1762). copy citation

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Author Jean-Jacques Rousseau
Source Emile, or On Education
Topic vice error
Date 1762
Language English
Reference
Note Translated by Barbara Foxley
Weblink http://www.gutenberg.org/cache/epub/5427/pg5427-images.html

Context

“It is therefore illogical to conclude that travel is useless because we travel ill. But granting the usefulness of travel, does it follow that it is good for all of us? Far from it; there are very few people who are really fit to travel; it is only good for those who are strong enough in themselves to listen to the voice of error without being deceived, strong enough to see the example of vice without being led away by it. Travelling accelerates the progress of nature, and completes the man for good or evil. When a man returns from travelling about the world, he is what he will be all his life; there are more who return bad than good, because there are more who start with an inclination towards evil.” source