"as much as he can bear in his own troubles"
What makes people _hard-hearted_ is this, that each man has, or
fancies he has, as much as he can bear in his own troubles.

How can you understand this phrase?
"as much as he can bear in his own troubles"

Question

"as much as he can bear in his own troubles"
What makes people _hard-hearted_ is this, that each man has, or
fancies he has, as much as he can bear in his own troubles.

How can you understand this phrase?
"as much as he can bear in his own troubles"

Answer

Each man thinks he has enough troubles of his own to endure (bear, carry) that he cannot take on anybody else's troubles