The sentence which clearly conveys the spirit of individualism is To believe your own thought, to believe that what is true for you in your private heart is true for all men. Read below the concept of individualism.
Individualism refers to the attitude or principle of being independent and self-reliant. Also, individualism is a social theory favouring freedom of action for individuals over collective or state control.
Individualism is the moral stance, political philosophy, ideology and social outlook that emphasizes the intrinsic worth of the individual.
Therefore, the correct answer is To believe your own thought, to believe that what is true for you in your private heart is true for all men.
learn more about individualism: https://brainly.com/question/18405002
#SPJ1