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A man has always to be busy with his thoughts if anything is to be accomplished.
A man has always to be busy with his thoughts if anything is to be accomplished.
A man has always to be busy with his thoughts if anything is to be accomplished.
A man has always to be busy with his thoughts if anything is to be accomplished.
A man has always to be busy with his thoughts if anything is to be accomplished.
A man has always to be busy with his thoughts if anything is to be accomplished.
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Antonie van Leeuwenhoek:
In treating of the oak, I have considered that the species of it growing in warm climates is superiAntonie van Leeuwenhoek:
I now found that the spider cannot fix its thread to anything without imprinting the hind part of iAntonie van Leeuwenhoek:
If any person examines by the microscope that part towards the extremity of the spider's body fromAntonie van Leeuwenhoek:
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How little do we discover in comparison of those things which now are and forever will be hidden frAntonie van Leeuwenhoek:
No one can pretend to say that a fish is ever killed by heat, for many kinds of fish, in the middleAntonie van Leeuwenhoek:
We will admit that, out of the mud or sand which is found on the seashore or the beds of our riversAntonie van Leeuwenhoek:
For my part, I hold it equally impossible for a small shellfish to be produced without generation aAntonie van Leeuwenhoek:
I have often endeavoured to view the circulation of the blood in terrestrial animals, but without sAntonie van Leeuwenhoek:
If we now plainly perceive that the passage of the blood from the arteries into the veins of the ta