What Am I Riddles

Question: Different lights make me strange,
for each one my size will change.

What am I?

Question: What always goes to bed with its shoes on?

Question: I give refuge to the blind and repeat everything they say.

What am I?

Question: I was the first and now I am the one.

What am I?

Question: I am the black child of a white father, a wingless bird, flying even to the clouds of heaven.
I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth I am dissolved into air.

What am I?