What is father's love like?

Father's love is like a mountain-angular and angular, but it will eventually give you an unchanging belief;

Father's love is like a mountain peak-tall and majestic, but it increases your confidence and courage to climb;

Father's love is like heaven-rough and far-reaching, which makes you look up to pity and dare not scream;

Father's love is like a river-slender and endless, so you dare not set foot in it.

Father's love is profound, great, pure and unrequited;

However, fatherly love is bitter, incomprehensible, melancholy and unattainable.