Quote by Henri Frederic Amiel, The Privat
Conquering any difficulty always gives one a secret joy, for it means pushing back a boundary-line and adding to one's liberty.

Summary
This quote highlights the satisfaction and sense of joy that comes with conquering challenges or difficulties in life. It suggests that overcoming obstacles allows for personal growth and a greater sense of freedom. By pushing beyond one's limits and expanding their capabilities, individuals experience a hidden joy in knowing that they have surpassed a boundary and increased their own level of freedom and potential.