A latin translation please

Hi all,

My Grandpa died at the weekend and I would love to use some latin phrases in memory of him. Could anyone please translate the following for me?

"To the world you may be one person,
But to one person you may be the world"

"Grandpa, miss you and love you always"

I also have the following poem so if anyone fancies a challenge in translating it that would be great!

"I think of you often
and make no outward show,
But what it means to lose you,
no one will ever know
You are not forgotten
nor will you ever be,
As long as life and memories last,
I will remember thee.
To some you may be forgotten,
to others a part of the past,
But to me who loved you dearly,
your memories will always last.
Nothing can be more beautiful
than the memories I have of you.
To me, you were someone special,
God must have thought so too!
If tears could build a staircase
and memories a lane,
I would walk all the way to Heaven,
and bring you back again."

Thanks

Dominique