It is proper to doubt.
Do not be led by holy scriptures,
or by mere logic or inference,
or by appearances,
or by the authority of religious leaders.
But when you realize that something
is unwholesome and bad for you,
give it up.
And when you realize
that something is wholesome
and good for you, do it.

Shakyamuni Buddha (5c BCE-4c BCE), Gautama Buddha was a philosopher, mendicant, meditator, spiritual teacher, and religious leader who lived in Ancient India.